From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752065AbXLCWBt (ORCPT ); Mon, 3 Dec 2007 17:01:49 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750990AbXLCWBm (ORCPT ); Mon, 3 Dec 2007 17:01:42 -0500 Received: from [81.2.110.250] ([81.2.110.250]:36579 "EHLO the-village.bc.nu" rhost-flags-FAIL-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1750764AbXLCWBl (ORCPT ); Mon, 3 Dec 2007 17:01:41 -0500 Date: Mon, 3 Dec 2007 21:57:27 +0000 From: Alan Cox To: "J.A. =?UTF-8?B?TWFnYWxsw7Nu?=" Cc: linux-kernel@vger.kernel.org Subject: Re: Kernel Development & Objective-C Message-ID: <20071203215727.543fc757@the-village.bc.nu> In-Reply-To: <20071203223902.1194aa69@werewolf> References: <474EAD18.6040408@stellatravel.co.uk> <20071130143445.GA2310@csclub.uwaterloo.ca> <53ADBDBF-9B65-441E-B867-D68DE48ABD64@mac.com> <4751BE0D.3050609@argo.co.il> <47539030.10600@argo.co.il> <20071203095022.GA28560@one.firstfloor.org> <4753ECA5.2010604@argo.co.il> <20071203211353.GA4009@1wt.eu> <20071203223902.1194aa69@werewolf> X-Mailer: Claws Mail 2.10.0 (GTK+ 2.10.14; i386-redhat-linux-gnu) Organization: Red Hat UK Cyf., Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SL4 1TE, Y Deyrnas Gyfunol. Cofrestrwyd yng Nghymru a Lloegr o'r rhif cofrestru 3798903 Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > You could write an equally effcient kernel in languages like C++, > using C++ abstractions as a high level organization, where It's very very hard to generate good C code because of the numerous ways objects get temporarily created, and the week aliasing rules (as with C). There are reasons that Fortran lives on (and no I'm not suggesting one should rewrite the kernel in Fortran ;)) and the fact its not really got pointer aliasing or "address of" operators and all the resulting optimsation problems is one of the big ones. Alan